Telephone-transmitter attachment.



J. S. WINORANTZ. TELEPHONE TRANSMITTER ATTACHMENT.

APPLICATION TILTD AUG. 12, 1908.

Patented Jan. 12, 1909.

a'vwentoz attomwy 9201mm I ter of a telephone, whereinpertains to makeand use the same,

1 this specification.

line hearing such questions, but it has been JOHN s. WINGRANTZ,or,irrrssune rnimsr ivium. 4

I ,TELErnonE-Tnansm'rmri a'rracmmn'r.

a Application filed Au Ton-ll whom it may concern:

Be it known that I, JOHN S. WINGRANTZ, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements in Telehone- .Transmitter Attachments; and I do eclare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it fapre er-- ence being had'to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of I My invention relates totelephone-trans mitter attachments, and has for its object to render thetransmitter temporarily inoperative during service. v

It is frequently desired by those using a telephone to momentarily-cease using the telephone, during conversation thereover, to answer orask questions of those near at hand, relative to the conversationreferred to, upon which occasions it has been the custom to place thepalm of the unoccupied hand over the mouth piece of the transmitter, inorder to prevent the party at the other end of the found that thisplacing of the hand upon the mouth piece is not effective, owing to thehand bein aoonductor of sound vibrations like that 0 other portions ofthe body, therefore the object of my invention is to provide a sim 1eand efiective means of overcoming the difficulty.

In the accompanying drawings, forming a part of this s ecification inwhich the invention is fully escribed, I have illustrated theapplication of my invention tothe transmit- Figure 1, is a longitudinalsectional view through a mouth piece, associated with the transmitterdiaphragm, and my improved attachment. Fig. 2, is a transversesectionalview of the left-hand portion of the same, on the line X. X. of Figi'tl,and Fig. 3,. is a similar view of that portion on the right of saidsection, similar detail arts of said device throughout the views Beingdesignated by like numerals of reference.

The invention comprises, a cylindrical member formed of the two sections1 and 2, threadably connected at one end to and forming an extension tothe usual mouth piece 3, the opposite end being threadably' Yspecification of Letters xat ent.

shouldered portion of the efiiectually prevented. 1

line-may be cut out of service as long as the lever is vibrating membermay 1908. Serial No. 448,259.

connected shown) inclosing the usual diaphragm 5, said extension beingprovided withv perforated heads 6 and '7, the latter having a centrallydis osed and shouldered opening 8 into which is loosely fitted a plunger9 havinga cup-shaped head upon t 'openin and a which p unger is roundedone at the other,

surrounding the held, by a spiral spring'S same, in enga ement witha'lever extendan elongatedopening llgm I the under side of andpivotallysecured being up throng tweenlugs 12 in the aforesaid section1, said section being further rated soft rubber'disk and asanitary auzener surface of t ing 15 being provided in the'upp'er portion of the saidsection In practice, when it'is to the transmitter casing (not 1 forinjecting the disinfectant fluid upon said gauze.

. I Patented Jan. 12, 1909. i 1

e end within the i provided with a perf0-' 13, Within its outer end,disk 14 adjacent the in- F e aforesaid head 7 an opendesired totemporarily cut out the 'transmitt'er-line during conversation, Wardthelever .10, which 0 plunger 9 to move forwafr shaped head 1 thereofinto enga' the soft rubber disk 13,, forcing t contact with theprojecting head,

eration causes the ement with 16 upon the s'ai diaphragm under tension,and as the soft rubber member is a non-conduotorwofvibration thetransmission of sound waves is Thus the transmitter mouth piece andtransmitter'casing, 'ailever prqectmg from and supported in said exten:-.s'1on,, a non-vibratingmember arranged in said extension adjacent thetransmitter diaphragm, and a member interposed be tween the saihe'a'n'dleverfwhercby said nongagement with the diaphragmby said lever toprevent said. diaphragm transmitting sound waves.

the operator simply presses fore same into" 3 '85 dia hragm ofthetransmitter, holdmgthe' bringing the cups be forcedinto en 2. Inadevice of the character s'etforth, an 1 extension connected to andbetween the mouth piece and transmitter casing and having perforatedheads therein,

memberarranged therein between one of said a non vibrating' I mouthpiece and transmitter casing and having per orated heads therein, anonvibrating and perforated disk arranged therein between one of saidheads and the transmitter diaphragm, a lever pivotally arran ed in saidextensionbetween said heads and aving its free end extending through aslot in said extension and a plunger arranged in the head between thelever and non-vibrating disk and provided with means to maintain itsengagement with the lever, adapted to act as a means to force thenon-vibratin engagement with the transmitter by the movement ofsaidlever.

In testimony whereof, I aflix my signature, in presence of twowitnesses.

JOHN S. WINGRANTZ, Witnesses:

A. M, LEE, A. MKLYNGH:

disk into ph gm.

